Effect of Anode Electrode Modified with Carbon Nanomaterials of Microbial Fuel Cell-based Sensor on Detection Sensitivity of Water Toxicity
10.11895/j.issn.0253-3820.171372
- VernacularTitle:碳纳米材料修饰阳极电极对微生物燃料电池传感器水体毒性检测灵敏度的影响
- Author:
Deng-Bin YU
1
;
Lan JIANG
;
Pei WANG
;
Ting LI
;
Shao-Jun DONG
Author Information
1. 中国科学院长春应用化学研究所
- Keywords:
Carbon nanomaterials;
Biosensor;
Microbial fuel cell;
Toxicity;
Inhibition ratio
- From:
Chinese Journal of Analytical Chemistry
2018;46(7):1032-1038
- CountryChina
- Language:Chinese
-
Abstract:
The low sensitivity of microbial fuel cell ( MFC)-biosensor is one of the bottlenecks in its practical application. To investigate the effect of anode electrode modified with carbon nanomaterials on the sensitivity of water toxicity detection of MFC-based biosensor, graphite felts ( GF ) were modified using two carbon nanomaterials of multi-walled carbon nanotubes ( MWNT ) and conductive carbon black ( GCB ) . MFC biosensors were started up with the anode electrodes, and the results showed that resistance of the GCB and MWNT-modified electrode was smaller than that of unmodified electrode, and the order of MFC power output was GCB/GF-MFC (2. 63 W/m2)>MWNT/GF-MFC (2. 56 W/m2)>GF-MFC (2. 09 W/m2). Then, 3, 5-dichlorophenol poison ( DCP) was used as a model toxicant in toxicity test, the order of toxicity inhibition ratios of 10 mg/L DCP to three MFC biosensor was MWNT/GF-MFC (31. 8% )>GCB/GF-MFC (26. 3% )>GF-MFC (20. 1% ). The sensitivity for toxicity detection by MFC biosensors with anode electrode modified with carbon nanomaterials was improved, and MWNT/GF-MFC had the highest sensitivity. The result of the study may promote the application of MFC biosensor in water pollution monitoring.
